TWI235261B - Light transceiving module - Google Patents

Light transceiving module Download PDF

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Publication number
TWI235261B
TWI235261B TW092108127A TW92108127A TWI235261B TW I235261 B TWI235261 B TW I235261B TW 092108127 A TW092108127 A TW 092108127A TW 92108127 A TW92108127 A TW 92108127A TW I235261 B TWI235261 B TW I235261B
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Taiwan
Prior art keywords
light
filter
optical
optical fiber
wavelength
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TW092108127A
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Chinese (zh)
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TW200407579A (en
Inventor
Keiichi Tatsuta
Seisaku Imai
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Alps Electric Co Ltd
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Publication of TW200407579A publication Critical patent/TW200407579A/en
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Publication of TWI235261B publication Critical patent/TWI235261B/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse
    • A61F2/0031—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00743—Type of operation; Specification of treatment sites
    • A61B2017/00805—Treatment of female stress urinary incontinence

Abstract

The present invention provides an optical signal receiving and transmitting module. The device has the followings: a light-emitting device, which emits light with the first wavelength; the light receiving device, which receives light with the second wavelength; and the filter, which is disposed in an inclined shape so as to make the light of the light-emitting device incident onto the optical fiber and to irradiate light from the optical fiber to the light receiving device. The light-emitting device, the filter and the optical fiber are coaxially positioned; and the light-receiving device is disposed at the position where light reflected by the filter is guided. In addition, the end face of optical fiber is inclined with a certain angle relative to the optical axis of optical fiber such that the inclined direction of optical fiber end face is opposite to the inclined direction of aforementioned optical fiber.

Description

1235261 玖、發明說明： [發明所屬之技術領域] 本發明關於一種光傳送接收用模組，特別是關於一種小 型且價廉的光傳送接收用模組。 [先前技術] 先前的光傳送接收用模組具備如圖5所示的光學系統。該 光傳送接收用模組20係使從作為發光元件的雷射二極體11 發出的波長為η 1 (例如，又=1 3 1 0 nm)的光入射到光纖1 2上， 再使從光纖12射出的波長n2(例如，又=1550 nm)的光·由作為 受光元件的光電二極體1 3接受的裝置。 該光傳送接收用模組20具備設置在雷射二極體丨丨的附近 而使光聚焦在上述光纖12的端面上的第1凸透鏡21 ,設置在 光電二極體1 3附近而使從光纖1 2發出的光聚焦在光電二極 體13上的第2凸透鏡23。此種光學系統在第1凸透鏡21和光 纖12之間具備一分波濾光器（fiiter)24,該濾光器24相對於光 軸傾斜45度角。在本例中，分波濾光器24是在平行的光學 玻璃上疊層多層膜而形成。 對於該光傳送接收用模組20，上述光纖12的端面12a係形 成為一傾斜構成，使得從雷射二極體U發出的光不會由光纖 12反射而返回（圖4中的符號1 6以誇張的方式顯示了其傾斜 角及大小）。 根據該光傳送接收用模組20，從雷射二極體11的發光元件 1 5發出的波長η 1的光經第1凸透鏡2 1，透過分波濾光器24聚 焦後入射到光纖12上。 E:\2002\84168.doc 5 1235261 從光纖1 2射出的波長&止、士人i ^ 2的先被分波濾光器24反射，由第2 凸透鏡23聚光後人射到光電二極體13的受光元件14上。 發明所欲解決之問題 :、：而Jl述現有的光傳送接收用模組，從雷射二極體11 發出的光由第i凸透鏡21聚焦’該聚焦光到達光纖12之間要 透過分波濾光器24。1235261 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an optical transmission and reception module, and more particularly to a small and inexpensive optical transmission and reception module. [Prior Art] A conventional optical transmission and reception module includes an optical system as shown in FIG. 5. The light transmitting / receiving module 20 is configured to allow light having a wavelength η 1 (for example, = 13 1 0 nm) emitted from a laser diode 11 as a light emitting element to be incident on the optical fiber 12, and Light having a wavelength n2 (for example, = 1550 nm) emitted from the optical fiber 12 is a device that is received by the photodiode 13 as a light receiving element. The light transmitting and receiving module 20 includes a first convex lens 21 provided near the laser diode 丨 丨 to focus light on the end face of the optical fiber 12, and provided near the photodiode 1 3 to remove the optical fiber The light emitted from the lens 12 is focused on the second convex lens 23 on the photodiode 13. This optical system is provided with a splitter filter 24 between the first convex lens 21 and the optical fiber 12, and the filter 24 is inclined at an angle of 45 degrees with respect to the optical axis. In this example, the demultiplexing filter 24 is formed by laminating a plurality of films on parallel optical glass. For the optical transmission and reception module 20, the end face 12a of the optical fiber 12 is formed in an inclined structure so that the light emitted from the laser diode U is not reflected by the optical fiber 12 and returned (symbol 16 in FIG. 4). Exaggerated display of its tilt angle and size). According to the light transmitting and receiving module 20, light having a wavelength η 1 emitted from the light emitting element 15 of the laser diode 11 passes through the first convex lens 21 and is focused by the demultiplexing filter 24 and incident on the optical fiber 12 . E: \ 2002 \ 84168.doc 5 1235261 The wavelength & stop and the scholar i ^ 2 emitted from the optical fiber 12 are reflected by the demultiplexing filter 24 first, and then collected by the second convex lens 23 and then emitted to the photoelectric two On the light receiving element 14 of the polar body 13. The problem to be solved by the present invention: J: According to the existing optical transmission and receiving module, the light emitted from the laser diode 11 is focused by the i-th convex lens 21, and the focused light passes through the sub-waves when it reaches the optical fiber 12. Filter 24.

但疋’在處於如此聚隹办能丨/ I 水…、狀怨的先透過包含相對光軸傾斜 汉置的平订光子玻璃的分波滤光器時，會發生透光損失及 非點狀光仃差#失’對光纖的_合效率降H對於此種情 況。，。降低透過損失可藉由實施防反射手段，提高向分波遽 光吞的人射率或者改善光學玻璃的材質降低吸收率來實現 ’但此種手段不能提高起因於非點狀光行差的對光纖的耦 合效率。 [發明内容] 本發明的目的在於提供一種能夠使分波遽光器的非點狀 光行差引起的發光元件和光纖的轉合效率損失為最小的光 傳送接收用模組。 [課題之解決手段] 本發明係以如下方式摄忐 乃式構成％決上述問題的光傳送接收; 模組。本發明係一種光傳送拉你 兀得迗接收用換組，其具備：發出第 波長光的發光元件；接收第2、，由|出ΑΑ ☆ 任叹罘2 /皮長先的受光元件；濾光器 呈傾斜狀配置，使來自上述發光元件的光入射到光纖上 並使來自上述光纖的光射向上述受光元件；將上述發光; 件、滤光器及上述光纖同軸地配置，將上述受光元件配」 E:\2002\84168.doc 6 1235261 1及第2光，因此能夠以更高的效率進行信號傳輸。 此外，本發明的光傳送接收用模組，其上❹光哭為分 歧滤光器(將她皮長光的光量分開：例如半反“上述 第1波長及第2波長係相同的波長。 根據滤光ϋ為分m器的本發明’使用對相同波長光 進行發射接收的元件，對其相互的通信按時段分割，即， 依序進行順方向與逆方向通信，即能狗在發射接收兩侧用 同一個光學裝置。 [實施方式] [發明之實施形態] 下面，根據圖式說明本發明的實施形態。圖i顯示本發明 光傳送接收用模組的實施形態的光學系統構成，圖2顯示 圖1所示的光學系統的耦合效率值及光行差值的曲線，圖3 係說明圖2的曲線橫軸上的θ的圖，圖4顯示採用圖1所示的 光學系統的光傳送接收用模組的具體例。 在圖1所示的光學系統中，使作為發光元件的雷射二極體 11(15顯示發光元件）發出的第1波長久=1310 nm的光入射到 光纖12上，並使從光纖12射出的第2波長；I =1550 nm的光入 射到作為受光元件的光電二極體1 3 (用14顯示受光元件）上 。該波長藉由在光傳送接收用模組的入射側和射出側間相 互變換，而可雙向通信。 在本例中，光傳送接收用模組30在上述雷射二極體11和光 纖12之間具備作為第1光學元件的非球面凸透鏡21和作為 第2光學元件的非球面凸透鏡23。利用這些非球面凸透鏡21 E:\2002\84168.doc 1235261 為0度角’而將方向相同的情況定為1 8〇度。 如表1及圖2所示，可以知道藉由使光纖12端面31的傾斜 方向與分波濾、光器24的傾斜方向相反，能得到卓越的耦合 效率。 圖4顯示具備上述光學系統的光傳送接收用模組的具體 實例。在本例中，將上述光學系統容納在由不銹鋼一體地 形成的基體40内。此外，光纖12藉由向基體4〇上的安裝套 同4 1，而保持以其端面相對於分波濾光器％反向地傾斜。 在上述實施例中，雖然使傳送接收光的波長不一樣，但 也可以使這些光的波長相同，依時間分段進行通信，能夠 X替分段或以特定時間分段實施通信。 即使是在此種情況下，本發明藉由選定濾光器的特性， 例如刀割波長的分波濾光器或者分歧同一波長光的分歧濾 光器，而能因應上述情況。 [發明的效果] 如以上所說明，根據本發明的光傳送接收用模組，可獲 致如下優異之效果。本發明將發光元件、濾光器和光纖同 軸地配置’而將受光S件配置在將來自光纖的光由上述滤 光器所反射而進仃導向的位置上，並使上述光纖端面相對 於光纖的光轴傾斜-^角度，同時該光纖端面的傾斜方向 與上述傾斜置的光纖的傾斜方向相反，W因在聚光光路 中傾斜配置㈣光器所造成的非點狀光行差，ϋ由入射到 與光纖的滤光器的傾斜方向反方向傾斜配置的端面上，而 可以予⑽消’從而能夠減輕與光纖㈣合效率的降低。 E:\2002\84168.doc 10 1235261 卜’本發明係將使第1波長的光聚焦在上述光纖端面上 的第1光子兀件配置在上述發光元件和上述濾光器之間，將 使第2波長的光聚焦在上述受光元件上的第2光學元件配置 在上述受光元件和上述滤光器之間，@此從發光元件射出 的第1波長的光透過滤光器，由第丨光學元件直接入射到光 纖上，另一方面，從光纖射出的光由濾光器所反射，並入 射到受光元件上，從而能夠減少光學元件的件數。 根據使用上述非球面透鏡的本發明，能夠以最小限度的 透鏡構成實現光行差少的光學系統。 此外，若根據本發明以濾光器作為分波濾器，則分別在 射出側、入射侧發射接收由2個波長構成的第丨及第2光，從 而能夠實現高效的信號傳遞。 接著，若根據本發明以濾光器作為分歧濾光器，傳送接 收相同波長的光信號，則使用對相同波長光進行發射接收 的元件’對其相互的通信依時段分割，即，依序進行順方 向與逆方向的通信，即能夠在發射接收兩側使用同一個光 學裝置。 [圖式簡單說明] 圖1係顯示本發明實施例的光傳送接收用模組的光學系 統構成圖。 圖2係顯示圖1所示的光傳送接收用模組的光學系統耦合 效率值及光行差值的曲線圖。 圖3係說明圖2所示曲線的各參數。 圖4係顯示圖1的光傳送接收用模組具體構成的斷面圖。 π 1235261 圖5係顯示先前的光傳送接收用模組圖。 [圖式代表符號說明] 11 雷射二極體 12 光纖 12a端面 13 光電二極體 14 受光元件 15 發光元件 21 凸透鏡 23 凸透鏡 24 分波濾光器 30 光傳送接收用模組 40 基體 41 套筒 12 E:\2002\84168.docHowever, when it is in such a state, I / I… When passing through a demultiplexing filter including a flat photon glass tilted relative to the optical axis, a loss of light transmission and non-pointing will occur. The optical efficiency difference between the optical fiber and the optical fiber is reduced for this case. . The reduction of transmission loss can be achieved by implementing anti-reflection methods to increase the transmittance of light to the sub-wavelength light or to improve the material of optical glass and reduce the absorption rate. Fiber coupling efficiency. SUMMARY OF THE INVENTION An object of the present invention is to provide an optical transmission / reception module capable of minimizing loss of coupling efficiency between a light emitting element and an optical fiber caused by a non-spotted optical parallax of a demultiplexer. [Solutions for solving the problem] The present invention is a light transmission / reception module that captures the following problems in the following manner: a module. The present invention relates to a light transmitting and receiving group for receiving light, which comprises: a light emitting element that emits light at a wavelength; a light receiving element that receives a second light source; ΑΑ ☆ Ren Tan 罘 2 / Pi Changxian; a light receiving element; The optical device is arranged obliquely, so that the light from the light emitting element is incident on the optical fiber and the light from the optical fiber is directed to the light receiving element; the light is emitted; the device, the filter and the optical fiber are coaxially arranged to receive the light Component allocation "E: \ 2002 \ 84168.doc 6 1235261 1 and 2nd light, so it can transmit signals with higher efficiency. In addition, in the optical transmission and reception module of the present invention, the upper light is divided into a split filter (to separate the light amount of the long light of the skin: for example, the half wavelength is the same wavelength as the above-mentioned first wavelength and second wavelength.) The present invention with an optical filter that is a demultiplexer 'uses elements that transmit and receive light of the same wavelength, and divides their mutual communication into periods, that is, performs forward and reverse communication in order, that is, the dog can transmit and receive two signals. The same optical device is used on the side. [Embodiment] [Embodiment of the invention] The following describes the embodiment of the present invention based on the drawings. Fig. I shows the optical system configuration of the embodiment of the optical transmission and reception module of the present invention, and Fig. 2 A graph showing a coupling efficiency value and an optical line difference value of the optical system shown in FIG. 1, FIG. 3 is a diagram illustrating θ on the horizontal axis of the curve of FIG. 2, and FIG. 4 shows light transmission using the optical system shown in FIG. 1. A specific example of a receiving module. In the optical system shown in FIG. 1, light having a first wavelength of = 1,310 nm emitted from a laser diode 11 (15 display light-emitting element) as a light-emitting element is incident on the optical fiber 12. Up and make it exit from fiber 12 The second wavelength; light at I = 1550 nm is incident on the photodiode 1 3 (the light receiving element is shown by 14) as the light receiving element. This wavelength is mutually between the incident side and the emitting side of the light transmitting and receiving module. In this example, the optical transmission / reception module 30 includes an aspherical convex lens 21 as a first optical element between the laser diode 11 and the optical fiber 12 and a lens element 21 as a second optical element. Aspheric convex lens 23. Using these aspherical convex lenses 21 E: \ 2002 \ 84168.doc 1235261 is a 0 degree angle and the same direction is set to 180 degrees. As shown in Table 1 and Figure 2, we can know that The inclination direction of the end face 31 of the optical fiber 12 is opposite to the inclination direction of the demultiplexing filter and the optical device 24, so that excellent coupling efficiency can be obtained. Fig. 4 shows a specific example of the optical transmission and reception module provided with the optical system. In this example In the above, the optical system is housed in a base body 40 integrally formed of stainless steel. In addition, the optical fiber 12 is held in the same manner as 41 by the mounting sleeve on the base body 40, and its end surface is kept at a% reflection with respect to the demultiplexing filter. Tilt to the ground. Although the wavelengths of transmitted and received light are different, the wavelengths of these lights can be made the same, and communication can be performed in time segments, and communication can be performed in X segments or in specific time segments. Even in this case The present invention can respond to the above-mentioned situation by selecting the characteristics of the filter, such as a cut-wavelength division wave filter or a division filter that divides light of the same wavelength. [Effects of the Invention] As explained above, according to the above, The optical transmission and reception module of the present invention can achieve the following excellent effects. In the present invention, the light-emitting element, the filter, and the optical fiber are coaxially disposed, and the light-receiving element is disposed so that the light from the optical fiber is received by the filter. Reflect into the guide position, and tilt the end face of the optical fiber with respect to the optical axis of the optical fiber by an angle of-^. At the same time, the inclined direction of the end face of the optical fiber is opposite to the inclined direction of the inclined optical fiber. The non-spot light aberration caused by the inclined arrangement of the optical filter can be eliminated by being incident on an end face which is disposed obliquely opposite to the inclined direction of the filter of the optical fiber. (Iv) an optical fiber can be reduced together with reduction of efficiency. E: \ 2002 \ 84168.doc 10 1235261 "The present invention is to arrange a first photon element that focuses light of a first wavelength on the end face of the optical fiber between the light emitting element and the filter, and The second optical element focused on the light-receiving element at the second wavelength is disposed between the light-receiving element and the filter. @This light-transmitting filter of the first wavelength emitted from the light-emitting element is transmitted by the first optical element. The light is directly incident on the optical fiber. On the other hand, the light emitted from the optical fiber is reflected by the filter and incident on the light receiving element, thereby reducing the number of optical elements. According to the present invention using the aspheric lens described above, it is possible to realize an optical system with a small amount of light with a minimum lens configuration. In addition, according to the present invention, if an optical filter is used as the demultiplexing filter, the first and second light consisting of two wavelengths are transmitted and received on the emission side and the incident side, respectively, so that efficient signal transmission can be achieved. Next, according to the present invention, if an optical filter is used as a branching filter to transmit and receive optical signals of the same wavelength, the components that transmit and receive light of the same wavelength are used to divide their mutual communication by time, that is, sequentially Forward and reverse communication, that is, the same optical device can be used on both sides of the transmission and reception. [Brief Description of the Drawings] Fig. 1 is a block diagram showing an optical system of an optical transmission / reception module according to an embodiment of the present invention. FIG. 2 is a graph showing an optical system coupling efficiency value and an optical line difference value of the optical transmission and reception module shown in FIG. 1. FIG. FIG. 3 illustrates the parameters of the curve shown in FIG. 2. FIG. 4 is a sectional view showing a specific structure of the optical transmission and reception module of FIG. 1. π 1235261 Figure 5 shows a conventional module for optical transmission and reception. [Description of Symbols in the Drawings] 11 Laser Diode 12 Optical Fiber 12a End Face 13 Photodiode 14 Light-Receiving Element 15 Light-Emitting Element 21 Convex Lens 23 Convex Lens 24 Demultiplexer 30 Optical Transceiver Module 40 Base 41 Sleeve 12 E: \ 2002 \ 84168.doc

Claims (1)

123猫ilG8127號補帽仏· K , 中文申請專利範圍替換本___________ 拾、申請專利範園： 1· 一種光傳送接收用模組，該元件具備：發出作 的第1波長光的發光元件；接收作為接收光的第2波長光 的文光元件，濾光器，該濾光器傾斜地配置，使來自上 述發光元件的光人射到光纖上，使來自上述光纖的光射 向上述受光元件； 將上述發光S件、上述滤光器和上述光纖同軸地配置； 將上述受光元件面己置在纟自上述光纖的光由上述滤光 器所反射而導向的位置上； 、使上述光纖的端面相對於上述光纖的光軸傾斜一定角 度，並使孩光纖端面的傾斜方向與上述傾斜配置的濾光 器的傾斜方向相反。 2·如申請專利範圍第丨項之光傳送接收用模組，其中配置將 上述第1波長的光聚焦在上述光纖端面上的第i光學元件 在上述發光元件和上述濾光器之間；配置將上述第2波長 的光聚焦在上述受光元件上的第2光學元件在上述受光 元件和上述濾光器之間。 3. 如申請專利範圍第！項之光傳送接收用模組，其中上述第 1及第2光學元件係非球面透鏡。 4. 如申請專利範圍第丨至第3項中任一項之光傳送接收用模 組，其中上述濾光器係分波濾光器。 5·如申請專利範圍第丨至第3項中任一項之光傳送接收用模 組，其中上述濾光器為分歧濾光器，上述第丨波長及第2 波長係相同的波長。123Cat ilG8127 No. 补 · K, Chinese patent application scope replacement ___________ Pick up and apply for patent garden: 1. A module for light transmission and reception, the element has: a light emitting element that emits light of the first wavelength; An optical element and a filter that receive light of the second wavelength as the received light. The filter is arranged obliquely so that the light from the light emitting element is incident on the optical fiber, and the light from the optical fiber is incident on the light receiving element. Arranging the light-emitting S-piece, the filter, and the optical fiber coaxially; placing the surface of the light-receiving element at a position where the light from the optical fiber is reflected and guided by the filter; The plane is inclined at a certain angle with respect to the optical axis of the optical fiber, and the inclination direction of the end face of the optical fiber is opposite to the inclination direction of the filter disposed in the inclination. 2. The light transmitting and receiving module according to item 丨 of the patent application scope, wherein the i-th optical element that focuses the light of the first wavelength on the end face of the optical fiber is arranged between the light-emitting element and the filter; A second optical element that focuses the light of the second wavelength on the light receiving element is between the light receiving element and the filter. 3. If the scope of patent application is the first! The optical transmission and reception module of the above item, wherein the first and second optical elements are aspherical lenses. 4. The optical transmission / reception module according to any one of the scope of application for patent No. 丨 to 3, wherein the above-mentioned filter is a demultiplexing filter. 5. The optical transmission / reception module according to any one of the scope of claims 1-3, wherein the above-mentioned filter is a branching filter, and the above-mentioned wavelength and the second wavelength are the same wavelength.
TW092108127A 2002-04-17 2003-04-09 Light transceiving module TWI235261B (en)

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CN101098194B (en) * 2007-07-20 2011-09-28 北京大学 Wide-angle income fiber receiving method for space light
KR101256379B1 (en) 2009-06-01 2013-04-25 미쓰비시덴키 가부시키가이샤 Light transmission/reception module
US9164247B2 (en) * 2011-07-28 2015-10-20 Source Photonics, Inc. Apparatuses for reducing the sensitivity of an optical signal to polarization and methods of making and using the same
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